Patents by Inventor Qicheng Christopher LI

Qicheng Christopher LI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Providing notification to speculatively waking up target virtual machine for an I/O event using multiple virtual machines and processors
    Patent number: 8544010
    Abstract: A computer system having a plurality of processor cores utilizes a device driver running in a driver virtual machine to handle I/O with the corresponding device for other virtual machines. A hypervisor in the computer system receives an interrupt from the corresponding device and identifies a virtual machine that best correlates to the received interrupt prior to forwarding the interrupt for handling by the driver virtual machine. The hypervisor then speculatively transmits a notification to the identified virtual machine to wake up and poll a memory shared between the identified virtual machine and the driver virtual machine. Once the driver virtual machine completes handling of the forwarded interrupt, it copies data made available by the corresponding device to the shared memory for access by the polling identified virtual machine.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: September 24, 2013
    Assignee: VMware, Inc.
    Inventors: Wei Huang, Xiaoxin Chen, Michal Ostrowski, Qicheng Christopher Li
  • Speculative Notifications on Multi-core Platforms
    Publication number: 20110072426
    Abstract: A computer system having a plurality of processor cores utilizes a device driver running in a driver virtual machine to handle I/O with the corresponding device for other virtual machines. A hypervisor in the computer system receives an interrupt from the corresponding device and identifies a virtual machine that best correlates to the received interrupt prior to forwarding the interrupt for handling by the driver virtual machine. The hypervisor then speculatively transmits a notification to the identified virtual machine to wake up and poll a memory shared between the identified virtual machine and the driver virtual machine. Once the driver virtual machine completes handling of the forwarded interrupt, it copies data made available by the corresponding device to the shared memory for access by the polling identified virtual machine.
    Type: Application
    Filed: September 18, 2009
    Publication date: March 24, 2011
    Applicant: VMWARE, INC.
    Inventors: Wei HUANG, Xiaoxin CHEN, Michal OSTROWSKI, Qicheng Christopher LI